Radiator hose question?

[bohmankid]

I'm looking for radiator hoses for my 85 GMC 5.3 swap. I'm using a stock fit Champion radiator and need hoses both upper and lower. The necks on the 5.3 water pump are different sizes than the necks on the radiator. What adapters/hoses are you guys running?

This has probably been resolved a million times but from a quick search I couldn't find a definitive answer. Please post links to similar threads with useful info!

[mooseknuckles]

I used a stock 99 up silverado lower hose, and the upper is made up of two hoses with a piece of pipe in the middle because I have a f-body water pump and the rad has outlets on the same side.....they are different sizes, but it will go on....still gotta do something better looking with that upper hose....

[68GMCCustom]

I used the '99-'06 truck upper and lower hoses....ends weren't right but with a little extra effort went on.

[Daaaanz67]

Here's what I used for lower hose the adapter is from jags that run used the one on the right
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[Daaaanz67]

Here's something I also came across on a build thread over at ls1 tech well worth looking at this is on a 71 c10 might work also on you build.
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[BR3W CITY]

[bohmankid]

Thanks guys! I bought the stock upper hose and it went on without much hassle on both ends. I don't know why I'm stressin over the little things, but I guess when you're a broke college student in the middle of an LS swap peaking over $2000 worth, you want to buy the right thing once!